Table 2.
The effect of drought (/30) or/and trace metal element contamination (B/) on selected growth parameters of three tested Miscanthus hybrids (M × g, TV1, and GNT10).
| C/M/100 | B/M/100 | C/M/30 | B/M/30 | C/T/100 | B/T/100 | C/T/30 | B/T/30 | C/G/100 | B/G/100 | C/G/30 | B/G/30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Height of shoot (cm) | 71.0 ± 4.5 bc | 75.7 ± 1.6 abc | 69.0 ± 5.9 bc | 57.0 ± 11.8 c | 86.2 ± 4.0 abc | 86.0 ± 8.9 abc | 88.0 ± 18.6 abc | 80.2 ± 6.1 ab | 105.0 ± 8.4 a | 72.5 ± 2.8 bc | 94.3 ± 8.6 ab | 87.3 ± 6.3 abc |
| Diameter of shoot (cm) | 6.7 ± 0.3 ab | 6.2 ± 0.4 ab | 5.7 ± 0.5 ab | 5.1 ± 0.9 b | 5.8 ± 0.3 ab | 6.5 ± 0.6 ab | 5.2 ± 0.3 b | 5.8 ± 0.4 ab | 7.2 ± 0.5 a | 6.2 ± 0.5 ab | 7.3 ± 0.6 a | 6.8 ± 0.4 ab |
| Number of shoots | 2.8 ± 0.4 bc | 1.7 ± 0.2 cd | 2.7 ± 0.2 bcd | 1.0 ± 0.5 d | 6.0 ± 0.8 a | 3.0 ± 0.0 bc | 4.8 ± 0.4 a | 2.5 ± 0.4 bcd | 3.3 ± 0.2 b | 2.3 ± 0.4 bcd | 2.7 ± 0.2 bcd | 2.0 ± 0.4 bcd |
| Number of leaves per shoot | 11.1 ± 1.0 ab | 10.7 ± 0.7 ab | 9.5 ± 0.7 bc | 9.0 ± 1.4 bcd | 9.5 ± 0.1 bc | 6.8 ± 0.3 d | 7.4 ± 0.1 cd | 7.1 ± 0.6 cd | 12.5 ± 0.2 a | 12.8 ± 0.6 a | 12.4 ± 1.3 a | 12.6 ± 1.0 a |
| Content of H2O in shoots (%) | 75.9 ± 2.5 ab | 73.3 ± 0.8 b ab | 75.7 ± 2.3 ab | 69.7 ± 4.6 bc | 74.7 ± 1.1 ab | 66.4 ± 3.4 c | 71.2 ± 1.5 bc | 70.9 ± 2.1 bc | 78.4 ± 1.0 ab | 81.0 ± 1.0 a | 79.8 ± 1.9 a | 74.4 ± 2.7ab |
| Biomass of shoots (g FW) | 58.2 ± 7.9 cd | 35.3 ± 6.2 ef | 42.4 ± 2.5 de | 12.0 ± 5.0 f. | 79.9 ± 6.0 b | 33.9 ± 2.5 ef | 61.9 ± 3.2 bcd | 28.5 ± 2.1 ef | 101.8 ± 3.8 a | 57.0 ± 12.0 cd | 70.4 ± 11.0 bc | 54.5 ± 1.8 cd |
| Biomass of shoots (g DW) | 14.5 ± 2.9 bc | 9.3 ± 1.6 cde | 10.5 ± 0.8 cde | 3.2 ± 2.8 e | 20.4 ± 2.1 ab | 11.2 ± 1.1 cde | 17.8 ± 0.8 ab | 8.2 ± 0.5 cd | 21.9 ± 0.6 a | 11.2 ± 2.7 cde | 15.0 ± 3.7 ab | 13.8 ± 1.3 bcd |
| Biomass of rhizomes (g DW) | 8.0 ± 1.9 ab | 6.9 ± 0.6 ab | 6.8 ± 2.9 ab | 8.2 ± 0.9 ab | 11.7 ± 2.6 ab | 10.2 ± 2.1 ab | 13.0 ± 1.5 a | 12.1 ± 2.0 ab | 9.8 ± 0.9 ab | 6.4 ± 0.7 b | 8.0 ± 1.7 ab | 11.1 ± 1.8 ab |
| Biomass of roots (g DW) | 3.3 ± 1.0 b | 3.3 ± 0.7 b | 3.0 ± 0.8 b | 1.8 ± 0.3 b | 4.8 ± 1.1 b | 4.4 ± 0.7 ab | 7.1 ± 1.0 a | 3.5 ± 0.7 b | 3.0 ± 0.5 b | 2.5 ± 0.1 b | 2.4 ± 0.5 b | 2.3 ± 0.5 b |
C—control soil, B—contaminated soil, M (M × g) —Miscanthus × giganteus, T (TV1)—Athena Terravesta, Ltd., G (GNT10)—clonal interspecific hybrid, 30—drought conditions (30% of RWC), 100—well-watered control (100% RWC). Presented values are mean ± SE (n = 4). Lower case letters denote significant differences between treatments according to Fisher’s LSD test (p > 0.05).